PonderAnswerSaveController.php
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	<?php

	final class PonderAnswerSaveController extends PonderController {

	public function processRequest() {
	$request = $this->getRequest();
	if (!$request->isFormPost()) {
	return new Aphront400Response();
	}

	$user = $request->getUser();
	$question_id = $request->getInt('question_id');
	$question = PonderQuestionQuery::loadSingle($user, $question_id);

	if (!$question) {
	return new Aphront404Response();
	}

	$answer = $request->getStr('answer');

	// Only want answers with some non whitespace content
	if (!strlen(trim($answer))) {
	$dialog = new AphrontDialogView();
	$dialog->setUser($request->getUser());
	$dialog->setTitle('Empty answer');
	$dialog->appendChild(phutil_tag('p', array(), pht(
	'Your answer must not be empty.')));
	$dialog->addCancelButton('/Q'.$question_id);

	return id(new AphrontDialogResponse())->setDialog($dialog);
	}

	$content_source = PhabricatorContentSource::newForSource(
	PhabricatorContentSource::SOURCE_WEB,
	array(
	'ip' => $request->getRemoteAddr(),
	));

	$res = new PonderAnswer();
	$res
	->setContent($answer)
	->setAuthorPHID($user->getPHID())
	->setVoteCount(0)
	->setQuestionID($question_id)
	->setContentSource($content_source);

	id(new PonderAnswerEditor())
	->setActor($user)
	->setQuestion($question)
	->setAnswer($res)
	->saveAnswer();

	return id(new AphrontRedirectResponse())->setURI(
	id(new PhutilURI('/Q'. $question->getID())));
	}
	}